

function reloadPage(){
	window.location.reload();
}

function addToCart(itemId,useshape){
	
	var qty=document.getElementById("qty"+itemId).value;
	
	var shape=null;
	if(useshape==true){
		var shapeSelect=document.getElementById("shape"+itemId);
		shape=shapeSelect.options[shapeSelect.selectedIndex].value;
	}
	else{
		shape=2;
	}
	
	var url="addCart.do?itemId="+itemId+"&shape="+shape+"&qty="+qty;

	request(url,reloadPage);
}

//收藏
var http_request=null;
function addCollection(itemId){
	//alert(itemId);
	http_request=getRequest();
	if (http_request == null) {
		alert("Your browser does not support AJAX!");
		return;
	}
	http_request.onreadystatechange = showMessage;
	http_request.open("GET", "addCollection.do?itemId="+itemId, true);
	http_request.send(null);
}

function showMessage(){
	if (http_request.readyState == 4) {
		alert(http_request.responseText);
	}
}

//===============================        AJAX core 
function request(url, onreadyFunction) {

	http_request = null;
	if (window.XMLHttpRequest) { // Mozilla, Safari,...
		http_request = new XMLHttpRequest();
		if (http_request.overrideMimeType) {
			http_request.overrideMimeType("text/xml");
		}
	} else {
		if (window.ActiveXObject) { // IE
			try {
				http_request = new ActiveXObject("Msxml2.XMLHTTP");
			}
			catch (e) {
				try {
					http_request = new ActiveXObject("Microsoft.XMLHTTP");
				}
				catch (e) {
				}
			}
		}
	}
	if (!http_request) {
		alert("Giving up :( Cannot create an XMLHTTP instance");
		return false;
	}
	http_request.onreadystatechange = onreadyFunction;
	http_request.open("GET", url, true);
	http_request.send(null);
}

function getRequest(){
	http_request = null;
	if (window.XMLHttpRequest) { // Mozilla, Safari,...
		http_request = new XMLHttpRequest();
		if (http_request.overrideMimeType) {
			http_request.overrideMimeType("text/xml");
		}
	} else {
		if (window.ActiveXObject) { // IE
			try {
				http_request = new ActiveXObject("Msxml2.XMLHTTP");
			}
			catch (e) {
				try {
					http_request = new ActiveXObject("Microsoft.XMLHTTP");
				}
				catch (e) {
				}
			}
		}
	}
	if (!http_request) {
		alert("Giving up :( Cannot create an XMLHTTP instance");
		return null;
	}
	return http_request;
}